STEM Gems (by the National Afterschool Association) are short discovery-based experiences. They involve little or no materials and may be easily implemented by educators who are not STEM specialists. Each STEM Gem is designed to engage young people in active experiential learning. The activities begin by setting up connections to prior knowledge, then a hands on activity provides new concepts and the opportunity to design experiments to answer any questions the kids discover. Finally, a connection to a different scenario for the concept is provided to help cement and evaluate the learning.